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The Hindu

The Science Quiz: Mathematical puzzles

The Science Quiz: Mathematical puzzles Copy link Email Facebook Twitter Telegram LinkedIn WhatsApp Reddit YOUR SCORE 0 /6 RETAKE THE QUIZ 1 / 6 | Visual: Name the game whose starting setup is shown here. The point is to move the entire stack of disks to another pole, one at a time, but at no point allowing a larger disk to sit atop a smaller one. DID YOU KNOW THE ANSWER? YES NO Answer : Towers of Hanoi SHOW ANSWER 2 / 6 | Pick a positive integer. If it's odd, multiply by 3 and add 1 (so 5 becomes 16). If it's even, divide by 2 (so 6 becomes 3). Repeat the process with the number you have. The Collatz conjecture is that if you repeat this process enough, you'll eventually reach X. What's the value of X? DID YOU KNOW THE ANSWER? YES NO Answer : 1 SHOW ANSWER 3 / 6 | When Leonhard Euler solved the problem called the Seven Bridges of Y in 1736, he founded modern graph theory. The idea is to traverse Y, a city, such that one would cross each of its seven bridges only once. Name Y. DID YOU KNOW THE ANSWER? YES NO Answer : Königsberg SHOW ANSWER 4 / 6 | What's the following problem called? Say you're on a game show. The host asks you to pick one of three boxes to open. One box has jewels, the other two have nothing. You pick box 1. But instead of opening it, the host opens box 3 and shows you it's empty. Now, do you pick box 2 or stay with box 1? DID YOU KNOW THE ANSWER? YES NO Answer : Monty Hall problem SHOW ANSWER 5 / 6 | Say you have a _____ ______: a square grid of numbers such that every row and every column sums up to the same value. One unsolved problem asks whether it's possible to make a 3x3 _____ ______ composed of nine distinct perfect square numbers (e.g. 9, 16, 25, etc.). Fill in the blanks (both pairs have the same words). DID YOU KNOW THE ANSWER? YES NO Answer : Magic square SHOW ANSWER